File : a-colire.adb
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME COMPONENTS --
4 -- --
5 -- A D A . C O M M A N D _ L I N E . R E M O V E --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1999-2009, Free Software Foundation, Inc. --
10 -- --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
17 -- --
18 -- --
19 -- --
20 -- --
21 -- --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
26 -- --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
29 -- --
30 ------------------------------------------------------------------------------
31
32 package body Ada.Command_Line.Remove is
33
34 -----------------------
35 -- Local Subprograms --
36 -----------------------
37
38 procedure Initialize;
39 -- Initialize the Remove_Count and Remove_Args variables
40
41 ----------------
42 -- Initialize --
43 ----------------
44
45 procedure Initialize is
46 begin
47 if Remove_Args = null then
48 Remove_Count := Argument_Count;
49 Remove_Args := new Arg_Nums (1 .. Argument_Count);
50
51 for J in Remove_Args'Range loop
52 Remove_Args (J) := J;
53 end loop;
54 end if;
55 end Initialize;
56
57 ---------------------
58 -- Remove_Argument --
59 ---------------------
60
61 procedure Remove_Argument (Number : Positive) is
62 begin
63 Initialize;
64
65 if Number > Remove_Count then
66 raise Constraint_Error;
67 end if;
68
69 Remove_Count := Remove_Count - 1;
70
71 for J in Number .. Remove_Count loop
72 Remove_Args (J) := Remove_Args (J + 1);
73 end loop;
74 end Remove_Argument;
75
76 procedure Remove_Argument (Argument : String) is
77 begin
78 for J in reverse 1 .. Argument_Count loop
79 if Argument = Ada.Command_Line.Argument (J) then
80 Remove_Argument (J);
81 end if;
82 end loop;
83 end Remove_Argument;
84
85 ----------------------
86 -- Remove_Arguments --
87 ----------------------
88
89 procedure Remove_Arguments (From : Positive; To : Natural) is
90 begin
91 Initialize;
92
93 if From > Remove_Count
94 or else To > Remove_Count
95 then
96 raise Constraint_Error;
97 end if;
98
99 if To >= From then
100 Remove_Count := Remove_Count - (To - From + 1);
101
102 for J in From .. Remove_Count loop
103 Remove_Args (J) := Remove_Args (J + (To - From + 1));
104 end loop;
105 end if;
106 end Remove_Arguments;
107
108 procedure Remove_Arguments (Argument_Prefix : String) is
109 begin
110 for J in reverse 1 .. Argument_Count loop
111 declare
112 Arg : constant String := Argument (J);
113
114 begin
115 if Arg'Length >= Argument_Prefix'Length
116 and then Arg (1 .. Argument_Prefix'Length) = Argument_Prefix
117 then
118 Remove_Argument (J);
119 end if;
120 end;
121 end loop;
122 end Remove_Arguments;
123
124 end Ada.Command_Line.Remove;